Thiemo Seufer 写道:
> Maybe. The 'mips3' maps to -march=r4000, it would assume more memory
> latency and a slower integer divider then -march=r4600.
>
Just like Ralf has said, -march might not lead to significant
performance difference, but -mtune=
may. Two years ago, I found that adding a machine.def to descripe
pipeline and resources for loongson2
and -mtune=loongson boost many programs by 2-5%。
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> Thiemo
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